64789688063 has 8 divisors (see below), whose sum is σ = 65159026800. Its totient is φ = 64420937280.

The previous prime is 64789688059. The next prime is 64789688083. The reversal of 64789688063 is 36088698746.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64789688063 - 2² = 64789688059 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64789688083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74981 + ... + 367697.

It is an arithmetic number, because the mean of its divisors is an integer number (8144878350).

Almost surely, 2^64789688063 is an apocalyptic number.

64789688063 is a deficient number, since it is larger than the sum of its proper divisors (369338737).

64789688063 is a wasteful number, since it uses less digits than its factorization.

64789688063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293977.

The product of its (nonzero) digits is 83607552, while the sum is 65.

The spelling of 64789688063 in words is "sixty-four billion, seven hundred eighty-nine million, six hundred eighty-eight thousand, sixty-three".